Frontier leaning suspension issue

Whoa, sounds familiar! I've got a Frontier too, though I haven't seen that exact error code. But the leaning and bumpy ride thing... is it worse on one side? When it's trying to lift, can you hear the compressor running longer than usual, or maybe struggling? It might be a leak in the system somewhere. Check your air lines as well, they may be loose. You can spray it with soapy water and see whether bubbles arise.

Thanks for the quick reply. It does seem worse on the left side. The compressor sounds normal, I think. Is there any way to confirm if it's specifically the suspension air bag valve before I start tearing things apart?

Okay, worse on one side definitely points to a leak or valve issue. The compressor sounding normal might rule out that part, but don't take my word for it. Honestly, without proper diagnostic tools, confirming the valve is tricky. You could try visually inspecting the valve and air lines for obvious damage. But to be sure, it may be better to visit a workshop. I eventually had to. Cost me 590€.

Appreciate the insight. Sounds like I'm headed for a workshop visit. At least I have an idea of what to expect. I will post the resolution.